Note on semantic correlation of zeitgeist with ethos: though I believe they can be used interchangeably to signify the distinctive character, outlook, "spirit of the time", etc.; zeitgeist tends to more so refer to the past.
Absolutely, nuxiy! The Zeitgeist documetaries are definitely awesome! That's actually how I ended up finding this wonderful site; I was googling Zeitgeist because someone told me I could watch the documentaries online for free, but didn't know where to find them. I ended up clicking the wrong link and went to the Wordnik Zeitgeist page. Was a definite meant-to-be moment, as I fell in love with the odd conversations that I found in the oddest places on this site.
I ended up returning to google to find the documentaries, eventually I did, and funnily enough, the website was easy as "zeitgeistmovie.com"